JPH0795405B2 - Fireproof wire - Google Patents
Fireproof wireInfo
- Publication number
- JPH0795405B2 JPH0795405B2 JP62244738A JP24473887A JPH0795405B2 JP H0795405 B2 JPH0795405 B2 JP H0795405B2 JP 62244738 A JP62244738 A JP 62244738A JP 24473887 A JP24473887 A JP 24473887A JP H0795405 B2 JPH0795405 B2 JP H0795405B2
- Authority
- JP
- Japan
- Prior art keywords
- glass
- fireproof
- layer
- electric wire
- fire
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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- Insulated Conductors (AREA)
Description
【発明の詳細な説明】 産業上の利用分野 本発明は耐火構造を備えた耐火電線に関する。TECHNICAL FIELD The present invention relates to a fireproof electric wire having a fireproof structure.
従来の技術 従来、耐火電線は第２図および第３図に示すごとく、ガ
ラス繊維クロス１に軟質または硬質の集成マイカ２を貼
り合わせた集成マイカテープを導電体３の周りに設けて
耐火層４とし、さらにその周囲にプラスチック、または
ゴムからなる絶縁層５、被覆層６が設けらていれる。こ
のような耐火電線の耐火層を形成するには、複数枚のマ
イカテープを重ねるか、あるいは１枚のテープを互いに
重ね合わせなければならず、マイカテープを多量に消費
し、工程も複雑であった。2. Description of the Related Art Conventionally, as shown in FIG. 2 and FIG. 3, a fireproof electric wire is provided with a laminated mica tape in which a soft or hard laminated mica 2 is attached to a glass fiber cloth 1 around a conductor 3 to form a fireproof layer 4 In addition, an insulating layer 5 and a coating layer 6 made of plastic or rubber are provided around it. In order to form such a fireproof layer of a fireproof wire, it is necessary to stack a plurality of mica tapes or one tape on top of another, which consumes a large amount of mica tapes and the process is complicated. It was
また、かかる耐火電線のコストを低減するため、硬質、
軟質の両マイカ箔を貼り合わせたマイカテープを用いる
提案もあり、たとえば、軟質集成マイカと硬質集成マイ
カをガラス繊維クロスに貼り合わせた複数マイカテープ
を耐火層として用いる提案がある。In addition, in order to reduce the cost of such fire resistant wire,
There is also a proposal to use a mica tape obtained by sticking both soft mica foils, for example, there is a proposal to use a plurality of mica tapes obtained by sticking a soft laminated mica and a hard laminated mica to a glass fiber cloth as a refractory layer.
発明が解決しようとする問題点 しかしながら、かかる特殊な構造を有する耐火テープを
用いた場合もなお、耐火電線の耐熱性、絶縁性は充分で
はなく、また耐火層の外側に別に絶縁層を設ける必要が
ある。Problems to be Solved by the Invention However, even when a fire resistant tape having such a special structure is used, the heat resistance and insulation of the fire resistant wire are still insufficient, and it is necessary to separately provide an insulating layer on the outside of the fire resistant layer. There is.
本発明は、簡単な構造で優れた耐熱性、絶縁性を有する
耐火層を備えた耐火電線を提供することを目的とする。An object of the present invention is to provide a fireproof electric wire having a fireproof layer having a simple structure and excellent heat resistance and insulation properties.
問題点を解決するための手段 本発明は導電体、該導電体を包囲するオキシナイトライ
ドガラス繊維からなる耐火層、および該耐火層の外部に
設けられた被覆層からなることを特徴とする耐火電線を
提供するものである。Means for Solving the Problems The present invention is characterized by comprising a conductor, a refractory layer made of oxynitride glass fiber surrounding the conductor, and a coating layer provided outside the refractory layer. It provides electric wires.
本発明で用いられるガラス繊維原料であるオキシナイト
ライドガラスは、酸化物ガラスの酸素原子が窒素に置き
換わった構造を有しており、窒素原子の結合原子価が３
であるところから従来のガラスに比べ、高弾性率を有す
る。かかるオキシナイトライドガラスの製造方法には、
金属アルコキシドを加水分解後脱水縮合させるゾル・ゲ
ル法、あるいは金属酸化物と金属窒化物を溶融する溶融
法、さらにはN2ガス吹き込み法、多孔質ガラスのNH3ガ
ス処理法などがあり、従来のガラス繊維では達成できな
かった弾性率12,500kg/mm2以上を得ることが可能であ
る。Oxynitride glass, which is a glass fiber raw material used in the present invention, has a structure in which oxygen atoms of oxide glass are replaced by nitrogen, and the bond valence of nitrogen atoms is 3
Therefore, it has a higher elastic modulus than conventional glass. In the method for producing such oxynitride glass,
There are sol-gel method of hydrolyzing metal alkoxide and then dehydration condensation, melting method of melting metal oxide and metal nitride, N 2 gas blowing method, NH 3 gas treatment method of porous glass, etc. It is possible to obtain an elastic modulus of 12,500 kg / mm 2 or more, which could not be achieved with the above glass fiber.
本発明にて補強繊維として用いられるオキシナイトライ
ドガラス繊維はSi13〜24at％、Ca10〜21at％、Mg0〜5.2
at％、Al0〜15.1at％、N7.5〜25at％、M0〜5at％（M:Z
r、Sr、Ba、Ｙ、Ce、Na、Ｂ、La、Ｋ、Ti）であるのが
好ましい。Oxynitride glass fibers used as reinforcing fibers in the present invention are Si13-24at%, Ca10-21at%, Mg0-5.2.
at%, Al0 to 15.1at%, N7.5 to 25at%, M0 to 5at% (M: Z
r, Sr, Ba, Y, Ce, Na, B, La, K, Ti) are preferred.
Siの含有量が上記範囲より少ないと結晶化し、ガラス状
態が得られない。また、この範囲より多いと、弾性率が
12500kg/mm2以下と低下する。If the Si content is less than the above range, crystallization occurs and a glass state cannot be obtained. Also, if it is more than this range, the elastic modulus is
It decreases to 12500kg / mm 2 or less.
また、Caの含有量が上記範囲より少ないと、結晶化を生
じ、一方、この範囲を越えると弾性率が12500kg/mm2と
低下する。Further, if the content of Ca is less than the above range, crystallization occurs, while if it exceeds this range, the elastic modulus decreases to 12500 kg / mm 2 .
さらに、Mgの含有量が上記範囲を越えると、結晶が生じ
る。Further, if the content of Mg exceeds the above range, crystals are formed.
また、窒素の含有量が上記範囲より少ないと、窒素含有
の効果がなく、また、この範囲を越えると、結晶化を生
じる。Further, if the content of nitrogen is less than the above range, the effect of containing nitrogen is not exerted, and if it exceeds this range, crystallization occurs.
本発明で用いられるオキシナイトライドガラスは強度、
N2含有量の点から溶融法により製造するのが好ましい。
オキシナイトライドガラスを溶融法にて得るには、金属
酸化物に金属窒化物を加え、高温で溶融する。Oxynitride glass used in the present invention has strength,
From the viewpoint of the N 2 content, it is preferable to manufacture by the melting method.
To obtain oxynitride glass by a melting method, a metal nitride is added to a metal oxide and melted at a high temperature.
金属酸化物の例としては、SiO2、CaO、MgO、Al2O3、Sr
O、Na2O、K2O、La2O3、Y2O3、ZrO2、TiO2、Na2O、K2O、
BaO、B2O3などが挙げられる。Examples of the metal oxide, SiO 2, CaO, MgO, Al 2 O 3, Sr
O, Na 2 O, K 2 O, La 2 O 3 , Y 2 O 3 , ZrO 2 , TiO 2 , Na 2 O, K 2 O,
BaO, etc. B 2 O 3 and the like.
また、金属窒化物の例としては、Si3N4、AlNなどが挙げ
られる。Examples of metal nitrides include Si 3 N 4 and AlN.
これら金属酸化物、金属窒化物の混合物を溶融するに
は、電気炉、イメージ炉などの加熱炉を用い、窒素雰囲
気下、温度1400〜1900℃、昇温速度10〜800℃/minにて
処理する。To melt a mixture of these metal oxides and metal nitrides, use a heating furnace such as an electric furnace or an image furnace, and treat them in a nitrogen atmosphere at a temperature of 1400 to 1900 ° C and a heating rate of 10 to 800 ° C / min. To do.
得られたガラスを窒素雰囲気下、温度1100〜1600℃にて
加熱、溶融し、紡糸速度20〜3000m/minにて紡糸して連
続繊維を得る。The obtained glass is heated and melted at a temperature of 1100 to 1600 ° C. under a nitrogen atmosphere, and spun at a spinning speed of 20 to 3000 m / min to obtain continuous fibers.
得られたガラス繊維の弾性率は、12500〜18000kg/mm2、
引っ張り強度70〜500kg/mm2が得られる。The elastic modulus of the obtained glass fiber is 12500 to 18000 kg / mm 2 ,
A tensile strength of 70 to 500 kg / mm 2 can be obtained.
ガラス繊維の繊維径は、３〜150μｍであるのが好まし
い。繊維径がこれより小さいと、紡糸が困難であり、一
方、これを越えると強度が極端に低下し好ましくない。The fiber diameter of the glass fiber is preferably 3 to 150 μm. If the fiber diameter is smaller than this range, spinning is difficult, while if it exceeds this range, the strength is extremely reduced, which is not preferable.
オキシナイトライドガラスからなるガラスクロスは従来
のガラスクロスと同様の構造であってよく、適宜の他の
繊維との混成繊維であってもよい。The glass cloth made of oxynitride glass may have the same structure as the conventional glass cloth, or may be a mixed fiber with other appropriate fiber.
また、被覆層は各種のプラスチックス、ゴムなどの従来
公知の材料がいずれも好適に用い得る。For the coating layer, any conventionally known material such as various plastics and rubber can be preferably used.
本発明の耐火層をなすオキシナイトライドのガラスクロ
スは、耐火性とともに絶縁性が高く、従来の耐火テープ
を用いた耐火電線のごとく、耐火層とは別に絶縁層を設
ける必要がない。The oxynitride glass cloth forming the refractory layer of the present invention has high fire resistance and high insulation properties, and it is not necessary to provide an insulating layer separately from the fire resistant layer, unlike a fire resistant electric wire using a conventional fire resistant tape.
なお、本発明の耐火電線は上記材料を用いて当業者に周
知の方法により容易に製造することができる。The fireproof electric wire of the present invention can be easily manufactured using the above materials by a method well known to those skilled in the art.
実施例 次に本発明を実施例に基づきさらに具体的に説明する。EXAMPLES Next, the present invention will be described more specifically based on examples.
製造例１ SiO220.0mol％、CaO40.8mol％ MgO12.0mol％、Al2O31
4.4mol％を混合し、空気中1500℃で２時間溶融した。混
合物を冷却後、ボールミルを用いて約10μｍに粉砕し、
Si3N412.8mol％を加え、窒化ホウ素ルツボを用い、窒素
中1750℃で30分溶融し、オキシナイトライドガラスを得
た。得られたガラスを紡糸装置内に配置した窒化ホウ素
ルツボに入れ、周囲を断熱材により保温した円筒状のカ
ーボン発熱体を用いて、窒素雰囲気下、1380℃にて加
熱、紡糸しワインダに巻取った。紡糸速度1500m/minに
て、直径約15μｍの連続繊維を得た。得られたガラス繊
維の引っ張り弾性率は、12600kg/mm2であった。Production Example 1 SiO 2 20.0 mol%, CaO 40.8 mol% MgO 12.0 mol%, Al 2 O 3 1
4.4 mol% was mixed and melted in air at 1500 ° C. for 2 hours. After cooling the mixture, it was crushed to about 10 μm using a ball mill,
Si 3 N 4 12.8 mol% was added, and the mixture was melted in nitrogen at 1750 ° C. for 30 minutes using a boron nitride crucible to obtain an oxynitride glass. The obtained glass was placed in a boron nitride crucible placed in a spinning device, and using a cylindrical carbon heating element whose periphery was kept warm by a heat insulating material, heated at 1380 ° C. in a nitrogen atmosphere, spun and wound into a winder. It was Continuous fibers having a diameter of about 15 μm were obtained at a spinning speed of 1500 m / min. The tensile modulus of elasticity of the obtained glass fiber was 12600 kg / mm 2 .
製造例２ オキシナイトライドガラスの原料としてSiO232.2mol％,
Al2O34.0mol％、CaCO355.7mol％、Si3N48.6gを用い、紡
糸温度を1415℃した以外は前記実施例１と同様にして紡
糸を行ない連続ガラス繊維を得た。紡糸速度80m/minに
て、直径約25μｍの繊維を得た。得られたガラス繊維の
引っ張り弾性率は15500kg/mm2であった。Production Example 2 SiO 2 32.2 mol% as a raw material for oxynitride glass,
Spinning was performed in the same manner as in Example 1 except that Al 2 O 3 4.0 mol%, CaCO 3 55.7 mol% and Si 3 N 4 8.6 g were used, and the spinning temperature was 1415 ° C., to obtain a continuous glass fiber. A fiber having a diameter of about 25 μm was obtained at a spinning speed of 80 m / min. The tensile modulus of elasticity of the obtained glass fiber was 15500 kg / mm 2 .
実施例１および２ 第１図は本発明の１実施例を示す断面図である。本具体
例において耐火電線は単芯である。銅製の導電体３（３
×8mm2）の回りに耐火層４として前記製造例１または製
造例２にて得られたオキシナイトライドガラス繊維から
なるガラスクロス（クロス幅:20〜100cm、クロス長:200
0〜5000cm、繊維径:10〜15μｍ）を巻きつけた。さら
に、この耐火層４の周囲に塩化ビニル樹脂（厚さ0.1〜
0.5mm）からなる被覆層６を設けた。得られた電線の耐
火性を消防庁告示７号（昭和53年10月16日付）にもとづ
き耐火試験を行ったところいずれも合格基準を上回っ
た。Embodiments 1 and 2 FIG. 1 is a sectional view showing one embodiment of the present invention. In this specific example, the fireproof electric wire has a single core. Copper conductor 3 (3
A glass cloth (cross width: 20 to 100 cm, cloth length: 200) made of the oxynitride glass fiber obtained in Production Example 1 or Production Example 2 as the fire-resistant layer 4 around x8 mm 2 ).
(0 to 5000 cm, fiber diameter: 10 to 15 μm) was wound. Furthermore, vinyl chloride resin (thickness 0.1 ~
0.5 mm) was provided. When the fire resistance test of the obtained electric wires was carried out based on the Fire Service Agency Notification No. 7 (October 16, 1978), all passed the acceptance criteria.
発明の効果 本発明の耐火電線は耐火層のみで特に絶縁層を設けるこ
となく、優れた耐火性、絶縁性を示し、簡単な構造で優
れた耐火電線が得られる。EFFECTS OF THE INVENTION The fire-resistant electric wire of the present invention has excellent fire resistance and insulation properties only with a fire-resistant layer without providing an insulating layer, and an excellent fire-resistant electric wire with a simple structure can be obtained.
第１図は本発明耐火電線の一実施例を示す断面図、第２
図は従来用いられていたマイカテープの構造を示す断面
図、第３図は従来の耐火電線を示す断面図である。 図中のおもな符号は次のとおりである。 3:導電体、4:耐火層、6:被覆層。FIG. 1 is a sectional view showing an embodiment of the fireproof electric wire of the present invention, and FIG.
FIG. 3 is a sectional view showing the structure of a conventionally used mica tape, and FIG. 3 is a sectional view showing a conventional fireproof electric wire. The main symbols in the figure are as follows. 3: Conductor, 4: Fireproof layer, 6: Covering layer.
Claims (1)
ライドガラス繊維からなる耐火層、および該耐火層の外
部に設けられた被覆層からなることを特徴とする耐火電
線。1. A refractory electric wire comprising a conductor, a refractory layer made of oxynitride glass fiber surrounding the conductor, and a coating layer provided outside the refractory layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62244738A JPH0795405B2 (en) | 1987-09-29 | 1987-09-29 | Fireproof wire |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62244738A JPH0795405B2 (en) | 1987-09-29 | 1987-09-29 | Fireproof wire |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6486410A JPS6486410A (en) | 1989-03-31 |
| JPH0795405B2 true JPH0795405B2 (en) | 1995-10-11 |
Family
ID=17123155
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62244738A Expired - Lifetime JPH0795405B2 (en) | 1987-09-29 | 1987-09-29 | Fireproof wire |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0795405B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR920001041Y1 (en) * | 1989-01-24 | 1992-02-10 | 현대자동차 주식회사 | Insulator structure of strut type suspension system for automobile |
| KR100273952B1 (en) * | 1997-10-22 | 2000-12-15 | 김용태 | Glass fiber insulated heating cable |
-
1987
- 1987-09-29 JP JP62244738A patent/JPH0795405B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6486410A (en) | 1989-03-31 |
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